Mixing machine



Nov. 20, 1928.

S. BABITZKY ET AL MIXING MACHINE Filed June 25, 1924// Patented Nov. 20,1928.

llJNITED As'r'a'riis PATENT oFFlcE.

MIXING isliAioiiiNii.Y Y,

' Application filed .Tune 25, 12924.y SerialiNo. 7272,.'506v Theinvention relates to mixing machines and more particularly to machinesfor mixing candy.` f y object of the invention isto provide a mixer thatwill have no mechanism or moving parts adjacent or above ythe top, thusavoiding'accideiits, making contents accessible and obviating `thedanger or" grease-and dirt from inadvertently Vdropping into the mixerand contaminating the contents.

Anotherk object ofthe invention is to provide a machine in which thedriving shaft mounted within the kettle of the mixer will not come incontact with its contents but will be encased by a noncorrosive cover.

Another object ,of kthe invention is to provide means for ,dischargingthe candy con' veniently and avoiding the usual .practice of having thecandy l or contentsv dischargedy through a tube leading'to they floorbelow Athat on which the mixer is installed.

l? -1 is a viewinelevation of a machine embodying features of theYpresentinvention, parts of said machine being broken away to clarify theshowing. a i i Fig. 2 is an assembled lelevation with parts `brokenaway. V i 5 i Fig, 3 is a 'cross-section taken. on line A-A of Figure 2.

A inixingchamber or kettle is formed of an outei' shell 5 preferablysemi-spherical in form at thebottom. end and'e-xtending up-y wardlyforming a cylindrical' rim, and` an innershell spaced Jfrom saidoutershell land stopping short of :the top and bent to form a closurefor the space between the walls,'thus making it steam tight; y

An inlet 7 and anV outlet 8 are providedat the bottom of .the shell forthe entrance and exit of a heating ,medium suoli as 'steanr` Equallyspaced "standards :9V arev securely lfastened tothe upper edge of themixing chamber or kettle and elxten'dldownwardlyto provide a supporttherefor.

An outlet spacer 10 extends outwardly from the center ot the inner shellor wall, said shell being provided with an annularl depres-` i sion toreceive and engage a flange llonsaid spacer 10 provided' for thatpurpose, thus leaving it yflush with the inner sur-face ofthe Vkettle tofacilitate the complete dischargeof the contents. The lower :end otspacer 10 is ,ot reduced d' .ineter to form a shoulderfor ala-it.sailnet @ed a lee-eea@ spaced relation. The upper end of spacer'lO iso' greatly reduced diameter, is externally threaded, and an annulargroove 13 is pro vided to bring the lowest point adjacent and inconnection with an opening 14 which ex,- tends through the spacer.

'A' tubular outlet 15 is provided with inteif-y nal threads whichengage'withthe Vexternal threads of spacer 10 and a gasket 16 islinserted and rests :on a shoulder within connection' `15 to make theunion secure.

A valve (not shown) may be secured vto the v branch 17 of ,thetubula'ioutlet to control the discharge of the contents. The lolwerend18 is internally threaded to receive a stutling box gland 19 and anydesirable packing may be :placed between "the gland and the outletconnection 15.

- A hollow shalt 2O extends rotatably through the bore of the gland 19`upwardly through the `central bore of `spacer 10 'and' is Y providedwith an annular enlargement which rests on the upwardly extendingportioii'of membery 10, and then extendsupwardly #into the mixing kettleand has fan agitator 23 ysve- .cured thereto by afheadless set scIGW illcollar integral with said agitator andprovided `rwith'a suitable fbore.

bevel gear 24 is securely fastened to the end of said hollow shaftby aheadless set screwuor the, like. j

A ysolid shaftQextends through said hollow shaft and has an agitator v26secured to Iits upper kend kby ,means ofa ,Cotter-pin which passesthrough a lcollarintegralwith the agitatorand through the shaft. v Abushing 27 A's inserted between the shafts to hold theml in spacedalignment and'vsaid bushing in turn is held against axial displacementby a counterbore in the` bevel axial displacement by a headless setscrew .which engages agitator,l hollow shaftand bushing.

A sleeve 30 is in threaded engagement,

with member 10 and extends-*upwardly to form a shield kfor the revolvingparts to pre- `vent the contents ofthe mixer kettle roin f coming incontact therewith;

:ioA

standards 9 firmly together and form a support for the drivingmechanism.

Another. bevel gear 37 is secured to the bottoni of solid shaft by means0f a c0tterpin and is mounted in athrust bearing 28 secured to across-brace.

A pinion gear 29 is in mesh with gears 24; and 37 and a counter-shaftextends from said pinion and has a spur gear 31 secured to its lotherend.

A bearing 32 inountedon cross-brace has spaced arms one of which abutseach of the gears 29 and 31, holding them against axial displacement. Ashaft 33 is mounted in bearings on a cross-brace 26 and has a pinion 35mounted thereon to mesh with gear 3l. A tight and loose pulley 36 issecured to the extreme end kof the shaft 33 to connect with a source ofpower.

It is to be noted that due to the arrange- 1 ment of the bevel gearsthat the shafts 25 and 2O willrevolve clockwise and counterclockwiserespectively and thus rotate the agi- .tators in opposite directions.

preventing the contents of said shells from coming in contact with saidagitator driving means, and liquid withdrawing means associated withsaid element, said liquidwithdrawing means communicating with said in-Aner shell through said element.

2. In a mixing machine, the combination with standards, of an outershell supported thereon, an inner shell spaced from said outer shell, aspacer element disposed centrally of said shells at the bottom thereof,a pair of relatively rotating shafts journaled in said 'spacer element,and extending into said shells., means carried by said element at theupper portion thereof for preventing the contents of said shells fromcoming in contact with said rotating shafts, agitators mounted on said.shafts within said shells, an

outlet extending axially of saidshafts in` threaded engagement with saidspacer element, and a passage in said spacerV element establishingcommunicationv between said inner shell and outlet.

n 3. In avinixing machine', a pair of spaced shells, a chamberseparating said shells adapted to receive va heating medium,`a .clo-

- sure for said shells, a spacer element disposed centrally of said`shells at the bottom thereof,

mounted on said shafts, and means associat-V ed with said spacerelement, effective to enable the withdrawal ofliquid received vby saidinner shell through said spacer element.

.4. In a mixing machine, `the combination with standards, asubstantially circular meinber carried bysaid standai^ds,a shell having'a peripheral rim supported by said circular member, another shell.coiiforiiiingin shape with said first named shell received therein inspaced relation to receive a heating medium intermediate its walls, aspacer element a`ssociated with said shells, driving means Journaled insaid element, and extending into said Y.

shells, means within said shells for preventing the contentsof saidshells from coming in contact with said driving means, agitato'rsconforming in shape with said shells' mountcontents of said innerV shellthrough said spacer element.

5. Inv a mixing machine, the kcombination with standards, asubstantially,circular member carried by said standards, a shell havinga peripheral rim: supported by said circular member, another jshellconforming in shape with said first named shell re-V ceived therein in.Vspaced relation to receive a heating medium intermediate its walls, a.spacer element associated with said shells, driving means journaled insaid element, and extending into said shells, means carried by saidspacer. element and f surrounding the portion of said driving means Aedon said driving'meaiiswithin said shells', and means 'lor selectivelywithdrawing the within said shells for preventing' the same Afrom comingin contact` with the' contents within the shells, agitators conformingin shape with said shells m'oiintedon said driv ing means within said.shells, and ,meansl for selectively withdrawing the. contents'of saidinne-r shell through saidVV spacer element, said content withdrawingmeans comprising a tubular memberin threaded coaxialengagement with saidlspacer element, said tubular member having an angulaily disposedoutlet.

6. In a mixing machine, a pair of vspaced shells, a spacer elementengaging the shells at the bottom thereof, and provided withfa bearingopening anda discharge opening at one side of the bearing opening, a cupshaped member dependingfrom the spacer element and arranged'y to catchthe batch passing through the dischargel opening, means for withdrawingthe batch from the cup shaped member, and agitator means inthe inner#mostshell, andincluding drive` means passing centrally through the cupshaped mein- Yiso ber and bearing opening, said drive means ext-endinginto the inneranost shell and being surrounded by va casing forpreventing the same from coming in Contact with the contents in theshell.

7. In a mixing machine, a` pair lof spaced shells, a spacer elementdisposed centrally of the bottom of the shells, shafts rextendingthrough said spacer, agitator-s on said shafts Within the shells, atubular extension on said spacer extending inwardly and surrounding saidshafts to prevent the contentsof the shell from contacting said shafts,said lspacer element having an opening extending therefrom to permitdischarge of the contents.

8. In a mixing machine, an inner shell, an outer shell surrounding` andspaced from the inner shell, a spacer element disposed centrally of thebottom Vof the shells to maintain them in spaced relation, an outlet insaid spacer, shafts extending through the spacer into the interior ofthe inner shell and having agitator blades thereon, ann a sleeve on saidbearing surrounding the shafts on the interior of the shells to preventthe contents thereof from contacting the shafts.

9. In a mixing machine, a pair of spaced shells, a sp-acer elementdisposed centrally of the bottom of the shells and having portionsextending vertically therefrom, said spa-cer having a vertical loo-reand an outlet opening therein, shafts extending through `the spacer`member and Asli-irrounding the shafts, the other of said extensionshaving a cup shaped tubular member threaded thereon, and an outlet insai-d tubular member to facilitate the withdrawal of the contents.

l0. In a mixing machine, a pair of spaced shells, a spacer elementdisposed. centrally of the bottom of said shells, 'shafts extendingthrough said spacer, one of said shafts being tubular and having theother shaft extending therethrough, agitators on said shafts within theshell, means outsidey said spacer and shells for admitting a lubricantbetween the said shafts, .a tubular extension on said spacer extendinginwardly and surrounding said shafts to prevent the contents of theshell from contacting said shafts, said spacer element having an openingextending therefrom to permit discharge of the contents.

`In testimony whereof we affix our signatures at l() South La SalleStreet, Chicago, Illinois. v f

SAMUEL BABITZKY.` VINCENT MATHE.

